Padlock.



LDIZMACSEK.

THE NORRIS PETERS ca.. PHOTO-LITHU.. WASHINOTGN. D. c.

f J. DIZMAGSK.

PADLOCK.

APPLICATION .FILED N0\T.Z, 1914.

Patented 32111.26, 1915.

3 SHEETS*SHEET 2. Fi .6.

'HE NORRIS PETERS CD.. PHUTc-LITHD.. WASHINGTUN. D. C.

I.. DIZMGSK.

` PADLOCK. APPLICATION FILED 'NOV.v2, 1914.

l 5126,41 1 7. Patented Jan. 26, 1915.

3 SHEETS-SHEET 3.

. lock in its unlocked position.

JUL-rus niziviAosK, or DUQUEsNi-i, PENNSYLVANIA.

PADLOCK.

Specification of Letters Patent.

lmatented Jan. 25, i915.;

Application filed November 2, 1914. Serial No. 863,926.

To all whom 'it may concern n Be it known that l, JULiUs Dizirfiosiiir,subject of the King of Hunger residing at Duquesne, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Fadlocks, .of which :the following is aspecification.

'This invention relates to certain new and useful improvements Vinpadlocks.

The primary object of the invention is to provide a padlock operablewithout the employment of a key and having blind unlocking .meanswhereby an unauthorized person would be unable to actuate the lock.

A' further object is to provide a keyless padlock with a spring boltshiftable in an unlocking position from the exterior of the lock casingand having a plurality of shiftably releasable guards requiring initialoperation prior to the shifting of thespring bolt.

lith these general objects in view and others that will appear as thenature of the invention is better understood, the same consists in thenovel combination and arrangement of parts to be hereinafter more fullydescribed, illustrated in the accompanying drawings, and pointed out inthe appended claims.

ln the drawings forming a part of this application and in which likedesignating characters refer to corresponding parts throughout the.several views, Figure 1 isV a front elevation of the device in itslocked position. F ig. 2 is a rear elevation thereof. Fig. 3 is a viewsimilar to Fig. 1 but with the front plate of the casing removed. j Fig.il is a similar view but with the locking plate retracted. Fig. 5` isasimilar View to F ig. 3 and with the locking plates and bolt shiftingmechanism retracted with the Fig. 6 is a view similar to Fig. 5, butwith the releasing` bolt normally positioned for again engaging theshackle. Fig. 7 is an end view of the lock. Fig. 8 is a transversesectional view thereof taken upon line VIH-VIII of Fig. 3. Fig. 9 is asimilar sectional view upon line IX-IX of Fig. V3. Figs. 10, 11 and 1Qare similar sectional views taken upon lines X--X, XIXL XIl-XIIrespectively of Fig. 3. Fig. 13 is a perspective view of the lock casingwith the mechanism and the front and rear plates removed therefrom. Fig.le isa perspective view of the front plateof the casing'partially brokenaway. Fig. 15 is a perspective view of the sliiftable end guard plateremoved. Fig. 16 is a similar view of the bolt carrying plate removed.Fig. 17 is a perspective view of the bolt removed, and Fig. 18 is aperspective view of the spring-pressed plate adapted to engage theshackle.

Referring more in detail to the drawings the lock broadly consists of asubstantially rectangular casing 10 hvaing a front side plate 11 andadapted to slidably position a shackle 12 through the casing openings 13and 14, it being noted that the longer end 15 of the shackle remains atall times within the casing and is provided with a notch 16 in one sidethereof while the shorter end 17 of the shackle is removable from theAopening 13 thereof while the shackle is capable of revolving in theopening le. A well or chamber 18 i's provided in the casing inValineinent with the openings 13 and adapted to position an expansionspring'lQ therein for normally pressing outwardly a bearing plateV 2Oadapted to be vresiliently engaged by the shackle ends 17 when retractedwithin the openings 3 and whereby the shackle may be pressed inwardlyagainst the action of the said spring 19 until the notch 16 engages thebolt 21 slidably mounted within the casing in similar partitions orwalls 22 thereof. A coil spring 23 encircles the reduced portion lil ofthe bolt 2l for normally projecting the oblique free end 25 thereofdirectly beneath the lower oblique end 2G of the shackle end 15 andwhereby as will be apparent, a forcing downwardly of the shackle fromits position as shown in Fig. 6, will automat-ically engage the bolt 2lwith the shackle notch 16 and retain the shackle in its locked position.A. slide plate 27 is mounted upon the outer side of the lower wall 23 ofthe casing and is provided with a slot Q9 through which a post 30 isprojected which has its Vinner end fixed to the free end of the boltportion 24, while a rivet or similar means 3l projects through a slot 32in the casing end 28 and is secured to the plate 27 for furthercontrolling the sliding niovement of the said plate. The plate 27 isthus shiftable as shown in Fig. 5 for releasing the shackle.

A guard plate 33 is slidably mounted upon the end wall 34 of the casingby means of rivets 35 projecting through similar slots 36 in the saidwall and is provided with an end flange 37 for grasping when desired toshift the said plate. It will here be noted that the plate 27 is alsofurnished with a hand-hold rib 38 and that the casing has a,

corner projection 39 acting as an end stop for the actuating plate 27.The wall 34 is provided with an opening 40 therein with which an opening41 in the guard plate 33 is adapted to be brought into alinement whenthe said plate 33 is positioned as illustrated in Fig. 3.

A rod 42 is slidably positioned within the casing upon the inner face ofthe front plate 11 thereof, and is connected by a slide disk 43 upon theouter face of front plate by means of a Vlug 44 projecting through aslot 45 in the said plate. The rod 42 is provided with an angularlypositioned cylindrical end 46 normally in alinement with the afore- Vmentioned opening 40. By this arrangement it will be seen that when theactuating plate 27 is positioned as illustrated in Figs. 4 and 6, theguard plate 33 may be slid downwardly to its position illustrated inFig. 3 and whereby thel plate 27 is then locked against slidino"movement for releasing the shackle. 1n this position of the guard plate33 the opening 41 thereof alines with the opening 40 of the casing end34 so that the disk 43 may be slidably moved for inserting thecylindrical end 46 of the bar 42 through the openings 40 and 41.

From this description of the invention and the operation of the severalelements, it will be evident that with the elements positioned asillustrated in Fig. 3, a sliding movement of the disk 43 in a directionaway from the guard plate 33 retracts the rod end 46 from the alinedopenings 40 and 41 and whereupon, the said plate 33 being therebyreleased, the same is shiftable for removing its end which is oppositeto the handshold flange 37 out of the path of movement of the actuatingplate 27 and whereupon the actuating plate may be forced slidably formoving the bolt 21 out of engagement with the shackle notch 1G andagainst the compression of the spring 23. rlhis release of the shackleallows the socketed spring 19 to force the shackle outwardly to itsunlocked position and at which time it may be' partially revolved ifdesired, while the bolt spring 23 projects the bolt 21 to its normalposition as illustrated in Fig. 6 and so as to be again engaged with theshackle by means of the notch 16 thereof for holding the shackle in itsretracted locked position.

It will thus be seen that a padlock is provided that may be readily'locked and unlocked by a person familiar with the operations thereofand that no key is necessary while an unauthorized person beingimfamiliar with the arrangement of plate and disk shifting means wouldbe unable to manipulate ,the lock or to pick the same.

While the forms of the invention herein shown andV described are whatare believed to be the preferred embodiments thereof, it is neverthelessto be understood that minor changes may be made without departing fromthe spirit and scopeof the invention as claimed.

`What l claim as new is 1. A lock comprising a casing having openings inthev side thereof, an automatically retracted shackle within saidopenings, a spring-pressed bolt for said shackle within said casing,shiftable Ameans eXteriorly of said casing for shifting said boltv andguard controlling means for said shiftable means.

2. A lock comprising a casing, a shackle slidable therein, resilientretracting means for said shackle, a spring-pressed retaining bolt forsaid shackle positioned within said casing, an actuating plate slidablymounted upon said casing, a connectingpost between said plate and bolt,a guard plate slidably mounted'upon said casing and adapted forprojection within the unlocking path or' movement of said actuatingplate.

3. A lock comprising a casing, an automatically projectable shacklecarried thereby, an automatic engaging bolt for said shackle within saidcasing, an actuating plate slidably mounted upon one side of saidcasing, a post secured between said plate and bolt, a guard plateslidably mounted upon an adjacent side of the casing and adapted toproject in the plane of movement of said actuating plate when the boltis nornially positioned and having an opening therethrough, the side ofsaid casing which is furnished with said guard plate being provided withan opening adapted to aline with the opening of said guard plate, ashiftable rod mounted upon the inner side of one wall of the casing andhaving a cylindrical end adapted to project through the said openingswhen positioned in alinement and a shiftable actuating disk for said rodsecured to said rod and flatly positioned upon the exterior of thecasing. j

In testimony whereof I affix my signature in presence of two witnesses.Y

JULIUs DIZMosk.

. Witnesses:

WV. H. BEATTY, L. A. WILLLIaMs.

(lepies.v of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, '.D. C3?

